No...you will just play into her hands.
Instead, send her a cease and desist letter demanding all activities/communications stop. State any further communications either in person, through internet, cell phone, etc... will be considered harassment at which time you will seek the advice of an attorney and/or law enforcement. Send it certified, sig required.
And if she breaks contact...have an attorney send one.
If you paper trail her...you will have a better chance of getting her to stop. My OW immediately stopped after receiving my letter stating the above.
Additionally, block her from your husbands phone. Just knowing he is receiving her messages is enough to keep her going.
Good luck!Me BS
"The only thing left to do is forgive and forget. I want to forgive you and I want to forget you!" ~Lauren Conrad
~Feel your emotions, but control your behavior~ Unknown